- #1

- 2

- 0

## Main Question or Discussion Point

Hello everyone,

I am needed to apply a filter to some acceleration data. That I think I can handle (I have chosen a Butterworth). What I do not understand are the CFC (Channel Filter Class) specifications. In particular, I do not know what a "Stop Damping" number specified in -dB is. Below is an example of a CFC60.

Filter type

CFC 60

Filter parameters

3 dB limit frequency: 100 Hz

Stop damping: –30 dB

Sampling frequency: At least 600 Hz

My sensor samples at 400 Hz which puts my CFC at about 36. Please correct me if I am wrong. At CFC 36, what would my parameters be? Do they define cut-off frequencies?

Thank you for any help. Google-skill"z" are failing me.

David

I am needed to apply a filter to some acceleration data. That I think I can handle (I have chosen a Butterworth). What I do not understand are the CFC (Channel Filter Class) specifications. In particular, I do not know what a "Stop Damping" number specified in -dB is. Below is an example of a CFC60.

Filter type

CFC 60

Filter parameters

3 dB limit frequency: 100 Hz

Stop damping: –30 dB

Sampling frequency: At least 600 Hz

My sensor samples at 400 Hz which puts my CFC at about 36. Please correct me if I am wrong. At CFC 36, what would my parameters be? Do they define cut-off frequencies?

Thank you for any help. Google-skill"z" are failing me.

David